Bergrus Industrial Park, Unit 1-10, Porterville, Cape Town, 6810, South Africa
T: +27 (0)22 931 2240 E:
www.finebubbletechnologies.com
Director & Founder Paul Botha
Strictly Confidential
–
Not to be copied without written consent by Fine Bubble Technologies (Pty) Ltd. ©Copyright 2018. All rights reserved.
9
The electrical connection should always be conducted by qualified personnel, in compliance with local
regulations. Make sure the voltage and frequency of the mains power supply match those reported on the
plate of the motor-driven
Nano Bubbler™
. Make sure that the mains power supply has an efficient
grounding connection and conducting the grounding of the MK1
Nano Bubbler™
. During installation, make
sure that the free end of the power cord is never immersed in water and is well protected against possible
infiltrations of water or moisture.
Special attention should be given to the integrity of the cables: even small leaks can cause infiltration in
the electric motor. In case of damage to the cables it is best to replace them rather than repair them: in
any case always contact qualified personnel. If using an extension, the junction must remain dry and the
cable must be sized appropriately.
Before conducting any maintenance and/or repair on the motor-driven
Nano Bubbler™
disconnect it from
the mains power supply as if the motor is on standby following intervention of the thermal device or due
to incorrect positioning (jamming) of the float, it may suddenly restart. In case of excessive overheating of
the motor, the thermal device can stop the machine: the cooling time is about 15 minutes, after which the
Nano Bubbler™
turns on again automatically. You must always try to eliminate the cause that triggered the
intervention of the thermal protector (impeller blocked due to for foreign objects in the Nano Bubb
ler™
,
coolant temperature too high).
It is always necessary to install an adequate electrical protection (adequately set circuit breaker and
differential switch with an operating current of less than 30 mA) that can provide an all-pole disconnection
from the mains with an opening distance between the contacts of at least 3 mm.
The maximum admitted shift between the actual voltage of the power supply and the rated value indicated
on the plate of the motor is of ±10% for three-phase.
Connection point should be located far enough from water region and the perfect prevention of electric
leakage is required.
If distance is more than 30 m and less 60 m from power supply to the
Nano Bubbler™
, an extension cables
up to 30 m can be used. A breaker with 8 A breaking current must be placed on an electric board and the
three-phase power cable of
Nano Bubbler™
relates to each corresponding output terminal of the breaker.
Then, the extension cable at one end relates to the input terminals of the breaker and finally the extension
cable at another end relates to the three-phase power supply.
Note: Allowable current of the extension cable must be at least 16A.
If distance is more than 60 m from power supply to
Nano Bubbler™
, use a 1,5-kW regulator to compensate
for voltage drop. A breaker with 8 A breaking current must be placed on an electric board and the three-
phase power cable of Main body relates to each output terminal of the breaker. Then, each input terminal
of the regulator relates to the corresponding input terminal of the breaker and finally each input terminal
of the regulator relates to corresponding line of the three-phase power supply.
